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Elucidating the water photo-oxidation mechanism by infrared spectroscopy

Total Cost €


EC-Contrib. €






 IRS-PEC project word cloud

Explore the words cloud of the IRS-PEC project. It provides you a very rough idea of what is the project "IRS-PEC" about.

hydrogen    pec    residing    infrastructure    energy    drawn    sensitivity    density    hole    oxidation    gain    fast    mechanism    half    act    nature    material    oxide    photocatalytic    cell    infrared    clean    reflection    largely    fundamental    intermediate    splitting    reaction    recombination    disclosed    function    thereby    input    oxidative    renewable    engineer    internal    place    speed    freezing    surface    versatile    onset    water    photoelectrode    hereto    interface    activation    bias    sunlight    device    ph    groups    surfaces    sites    constructed    substrate    convert    operando    potentials    electrode    relaxing    liquid    pillars    initiate    trapping    fuel    models    photoelectrochemical    electrolyte    constraints    spectroscopy    unexplored    simulations    voltage    delivered    exact    electron    reactions    actual    species    occurring    solid    undesired    photocurrents    operation    metal    tool    simultanously    multiple    energies    measured    area    densities    additionally    quantified    critical   

Project "IRS-PEC" data sheet

The following table provides information about the project.


Organization address
postcode: 3526 KV

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Project website
 Total cost 165˙598 €
 EC max contribution 165˙598 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-02-01   to  2019-01-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Hydrogen is a highly versatile fuel that is believed to become one of the key pillars to support our future energy infrastructure. A clean and renewable method to produce hydrogen is to use sunlight to convert water into hydrogen in a photoelectrochemical (PEC) cell. The exact mechanism of this photocatalytic water splitting remains a largely unexplored area. In this project, I will provide insight into the more challenging oxidative half-reaction occurring at metal-oxide surfaces. To gain insight into the oxidative half-reaction, surface groups residing at the solid/liquid interface will be measured by infrared spectroscopy during actual device operation. Hereto, a PEC cell will be constructed with a multiple internal reflection element as key component; it will ensure a high sensitivity while simultanously act as substrate for the working electrode. The novel approach to apply a bias voltage allows for photoelectrochemical analysis, but also allows ‘freezing’ of the surface species thereby relaxing the constraints of a fast measurement speed. From in operando measurements the density and nature of surface groups present at a well-defined metal-oxide surface will be obtained as a function of electrolyte pH. With this knowledge conclusions can be drawn on which surface sites initiate the oxidation reaction, which groups present sites where (intermediate) reactions with high activation energies take place, and where undesired hole-trapping and electron-hole recombination are most likely to occur. Thereby providing fundamental insight into the water oxidation mechanism, which is required to engineer a photoelectrode material with high photocurrents and low onset potentials. Additionally, the quantified information on surface species densities is much-needed input in models and simulations. Furthermore, a tool will be delivered with which the critical steps in the oxidation reaction can be disclosed as a function of pH.

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The information about "IRS-PEC" are provided by the European Opendata Portal: CORDIS opendata.

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